Correct Answer: B. size of the head

Correct Answer: B. Colostrum

Explanation

(a) Aims of crop improvement: To (i) produce crops with some level of uniformity in growth habit (ii) improve aesthetic value of produce (iii) produce crops that are adapted to particular adverse condition (iv) produce higher yielding crops (v) produce crops that are resistant to pests (vi) produce crops that are resistant to diseases (vii) produce crops that meet some specific manufacturers/consumers requirements (viii) produce crop with short gestation or early maturing crops.

(b) Selection in crop improvement: is the process of choosing specific individuals or groups of plants from a mixed population. It is the process of picking out individuals or groups of plants having specific or desirable characteristics.

(c) Methods of selection: (i) mass selection (ii) pure-line selection (iii) pedigree or progeny selection (iv) bulk selection

(d) Explanation of: (i) homozygotes: Individuals in which the gene pairs for a particular trait are identical (ii) backcross: A cross between an offspring and one of the parents (iii) dominance: This is a condition in which a gene manifests itself phonotypical over the other when the genotype is heterozygous

Correct Answer: C. it encourages the build up of pests and diseases of crop

Correct Answer: B. guinea savanna

Explanation

Eight problems which an agricultural extension worker can face in the discharge of his duties are:

(i) Language barrier leads to improper dissemination of new innovations.

(ii) Inadequacy of well trained extension workers makes him have a wider area and more farmers than he can cope with.

(iii) Inadequate resources such as finance and materials tend to hinder his performance.

(iv) High level of illiteracy among farmers may slow down the rate of adoption of new innovations.

(v) Inadequate publicity - mass media are not often fully utilised in publicising extension programmes.

(vi) Poor transportation or lack of it retards the performance of the extension worker.

(vii) Insufficient motivation of extension worker by way of remuneration makes him reluctant to work.

(viii) Unfavourable attitude of rural farmers toward government programmes, makes adoption of new innovations difficult.

Correct Answer: B. oil palm

Explanation

Maceration is a process used in the processing of oil palm. It involves the softening or breaking down of the oil palm fruits by soaking them in water or another liquid. This process helps to separate the oil from the fruit and makes it easier to extract the oil.

Correct Answer: A. decrease soil acidity

Correct Answer: B. organic manure

Correct Answer: C) loamy soil